$(function(){
    var data1 =
        [
            {
                id:'126652',
                no: '1',
                longitude: '103.94292',
                latitude: '30.620123',
                distance:'253'
            }, {
                id:'122855',
                no: '2',
                longitude: '103.94292',
                latitude: '30.620123',
                distance:'258.25'
            }, {
                id:'1285569',
                no: '3',
                longitude: '103.94292',
                latitude: '30.620123',
                distance:'253'
            }, {
                id:'1222555',
                no: '4',
                longitude: '103.94292',
                latitude: '30.620123',
                distance:'253'
            }]

    //遍歷陣列而設計
    data1.forEach(function (val,index,arr) {
          console.log(val) //{id: "126652", no: "1", longitude: "103.94292", latitude: "30.620123", distance: "253"}
          console.log(val.no);//1 2 3 4
          console.log(index);//0 1 2 3
          console.log(arr);//整個陣列
    })
    var data2 = {a:'1',b:'2',c:'3',d:'4'}
    //迴圈物件而設計
    for(let i in data2){
        console.log(i)//a b c d
        console.log(data2[i])//1 2 3 4
    }
    var data3 = [1,2,3,4]
    //最原始遍歷方式
    for(var i=0;i<data3.length;i++){
        console.log(data3[i])//1 2 3 4
    }
})